Add optional regulatory info page

Bug 7081675

If R.bools.config_show_regulatory_info is true, then show a "Regulatory
information" item on the "About phone" page. Show a DialogFragment
displaying the regulatory_info drawable if the item is clicked. Add a
1x1 blank regulatory_info drawable for devices that won't show this.

Change-Id: I5823d8969de038becf4911dce893dab5dbb23537

src/com/android/settings/RegulatoryInfoFragment.java

@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings;
+
+import android.app.DialogFragment;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import com.android.settings.R;
+
+/**
+ * {@link DialogFragment} that displays regulatory information.
+ * "About phone" will show a preference that displays this fragment when
+ * clicked if R.bool.config_show_regulatory_info is true.
+ */
+public class RegulatoryInfoFragment extends DialogFragment {
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+            Bundle savedInstanceState) {
+        return inflater.inflate(R.layout.regulatory_info, container, false);
+    }
+}